NJIT eTD::njit-etd1992-016::Liu, Jian::"Thermal oxidative decomposition of chlorobenzene in a tubular flow reactor"

The thermal reaction experiments of chlorobenzene decomposition were carried out in a tubular flow reactor in hydrogen and oxygen mixtures ranged from 1% to 5% at one atmosphere total pressure. Experiment temperatures were varied over a range of 590--640°C. Residence times ranged from 0.3 to 2.0 seconds.

It was found that the decomposition of chlorobenzene increased with both temperature and residence time. The oxidation of chlorobenzene occurred more rapidly when oxygen concentration was increased. 95% decomposition of chlorobenzene occurred at 620°C, O₂/H₂ = 5%, and two seconds residence time.

The major products were benzene and HCl, and the minor products were CH₄, C₂H₄, C₂H₆, CO, and CO₂. Toluene and C2H2 were observed in several experimental conditions.

A kinetic reaction mechanism which included 220 elementary reactions was developed and modified by adding mechanism important to benzene oxidation reactions. In the 600°C to 630°C temperature range, the model predictions of chlorobenzene decomposition and benzene formation at one second residence time and 1% to 5% oxygen and hydrogen ratio showed significant agreement with experiment data.

Title:	Thermal oxidative decomposition of chlorobenzene in a tubular flow reactor
Author:	Liu, Jian
Document Type:	Thesis
Department:	Department of Chemical Engineering, Chemistry and Environmental Science
Degree:	Master of Science
Major:	Environmental Science
Advisory Committee:	Bozzelli, Joseph W. Kebbekus, Barbara B. Mitra, S.
Thesis Date:	1992, May
Keywords:	Chlorobenzene--Decontamination. Chlorobenzene--Oxidation. Decomposition (Chemistry). Thermochemistry. Incineration.
Availability:	Unrestricted
Abstract:	The thermal reaction experiments of chlorobenzene decomposition were carried out in a tubular flow reactor in hydrogen and oxygen mixtures ranged from 1% to 5% at one atmosphere total pressure. Experiment temperatures were varied over a range of 590--640°C. Residence times ranged from 0.3 to 2.0 seconds. It was found that the decomposition of chlorobenzene increased with both temperature and residence time. The oxidation of chlorobenzene occurred more rapidly when oxygen concentration was increased. 95% decomposition of chlorobenzene occurred at 620°C, O₂/H₂ = 5%, and two seconds residence time. The major products were benzene and HCl, and the minor products were CH₄, C₂H₄, C₂H₆, CO, and CO₂. Toluene and C2H2 were observed in several experimental conditions. A kinetic reaction mechanism which included 220 elementary reactions was developed and modified by adding mechanism important to benzene oxidation reactions. In the 600°C to 630°C temperature range, the model predictions of chlorobenzene decomposition and benzene formation at one second residence time and 1% to 5% oxygen and hydrogen ratio showed significant agreement with experiment data.
Complete Thesis:	njit-etd1992-016 (137 pages ~ 4,668 KB pdf)
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